The 28-year-old Tolliver made his MLB debut this season, allowing four runs, three earned, in 4 2/3 innings of relief while throwing his fastball in the 93-94 MPH range. He fared well, however, in stops at three minor league affiliates, posting a 1.94 ERA, 9.9 K/9 and 3.0 BB/9 in 41 2/3 total innings. The Angels currently have Jose Alvarez and Cody Ege as lefties available out of their bullpen; Tolliver will give them another left-handed option.